Apparatus for jointing pipes.



W. S. SIGLE'R.

APPARATUS FOR JOINTING PIPES.

APPLICATION FILED NOV. 2, 1908.

940,562. Patented Nov. 16, 1909.

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WINFIELI) sr'nrnfnn- SIGLER, or SAN PEDRO, MEXICO.

APPARATUS Fen JOINTING PIPES.

Application filed November 2, 1908.

To all whom it may concern:

Be it known that I, VJINrmLo Srninnn SIGLER, a citizen of the UnitedStates of America, residing at San Pedro, Federal District of Mexico,liiexico, have invented certain new and useful Improvements in Apparatusfor Jointing Pipes, of which the following is a specification.

My invention aims to produce watertight and lasting joints between theends of pipes made of concrete, cement, clay, any argillacious material,or asphaltum and bitumen. Hitherto it has been customary to make suchjoints with male and female coupling ends, one pipe having a largeflaring-out end forming the female portion, which entailed increasedcost of manufacture, and prevented the use of pipes of uniform externaldiameter throughout. Or the joints were made by collars sweated to onepipe section end and united to the other by inserting between the collarand the male end of the joint moist cementing material. This methodfrequently gave rise to leakage. By means of the present process andapparatus pipe sections of uniform external diameter throughout areconnected by a material similar to or identical with that of the pipewalls, disposed so as to form with the walls an integral structure, andto be readily and cheaply applied. These objects I attain by the processherein below fully described and by the apparatus illustrated in theaccompanying drawing in which:

Figure l is a perspective view of my new jointing mold as closed; Fig.2, a top plan view of the same; Fig. 3, a perspective view of the moldopened; Fig. 4, a top plan view of the mold shown in Fig. 3, and Fig. 5is a perspective view of the adjustable circular liner.

The mold, Fig. 1, of wood or other suitable material, preferably metalis composed of two semi-circular halves, 2 and 6, each of which hasformed on its internal face asemicircular recess, 2, 6*, preferably ofsquare section, having an internal diameter equal to the externaldiameter of the pipes to be jointed, and a depth equal to the desiredthickness of the union collar. The width of said recess determines thewidth of the union-collar as the recess forms with the exterior walls ofthe pipes the mold for said collar. This width will vary with thediameter and the thickness of walls of the pipes and the pressure towhich they may Specification of Letters Patent.

Patented Nov. 16, 1909.

Serial No. 460,771.

be subjected. The two sen'li-circular halves are connected at the bottomby a hinge-joint 1, having male and female members connected by thehinge pin 1. At the opposite or top end each half carries integral withit a widened portion of rectangular section having an internal channel 7open at the top and continuous with the recess 2 and (3 respectively.The two widened portions may be locked together by the hingedstirrup-piece 3, swinging on the hinge pin 5, journaled in the widenedportion of half 2, and engaging in the locked position the widenedportion of half (3, suitably formed to a rectangular cross-section forthis purpose. Handle 4, projecting from the engaging end ofstirrup-piece 3, facilitates the locking and unlocking of said piece.

lVhen circumstances permit it is preferable to form the joint betweenthe pipesections before they have become entirely set, but after theyhave become hard enough to stand handling without local deformation. Butperfectly tight and reliable joints are made even after the pipes havebecome thoroughly set. The two pipes to be joined are placed end to endand in line. To prevent any of the jointing material from workingthrough the circular crack or opening between the pipe ends and cloggingthe interior of the pipe this opening is entirely closed as regards theinterior of the pipe by setting out against its circular bottom theexpansible liner 8, by means of the turn buckle 9 connecting the twoparts of the diametrically extending tension-rod 9 This expansible lineris a sleeve circular in section, of elastic metal split parallel to itsaxis, allowing the edges of the split to lap over each other so as topermit of changes of diameter of the sleeve according to the distentionof the rod 9*. Thereupon the mold is clasped around the pipe so that thecircular junction line or crack between their ends comes midway betweenthe lateral faces of the mold, and the latter is locked in this positionby clamping down the stirrup-piece 3. Suitably moistened bindingmaterial, preferably of the same character as that of the pipe walls isnow introduced into the recess 2 6 through the entrance channels 7, 7.This material is duly tamped down until the entire recess is filled. Assoon as the material has set hard the mold is removed by an obviousmanipulation, leaving a collar of binding material which has,

along its inner surface become incorporated with the material of thepipe walls, forming an absolutely impermeable and durable joint. Theexpansible liner 8 is removed from the inside of the pipes by slackingup the turnbuckle and withdrawing the liner.

It is to be noted that in this process the binding material will workitself into any openings there may be in the end-joint between thecontiguous pipe-ends, and will there set to form an end-packing.

I attach especial importance to the provision for preventing any of thecementing material used for the joint from penetrating into the interiorof the pipes to be jointed, as in processes of this nature it is commonto allow the jointing material to intrude into the interior of thepipes, thereby reducing their effective diameter.

I claim:

1. A mold for joining the ends of pipes including an expansible andcontractible member which conformably engages on the inner circumferenceof the pipe ends so as to extend on opposite sides of the line ofjuncture between the pipe ends, and a mold proper which conformablyengages about the periphery of the pipe ends and which is formed with agroove which extends on opposit sides of the line of uncture between thepipe ends.

erases 2. A mold for joining the ends of pipes including an expansibleand contractible member which conformably engages on the innercircumference of the pipe ends so as to extend on opposite sides of theline of juncture between the pipe ends, and a mold proper whichconformably engages about the periphery of the pipe ends and whichformed with a groove, which extends on opposite sides of the line ofjuncture between the pipe ends, means whereby the ends of pipes may bejoined by the employment of plastic material including a splitband whichhas its ends overlapping and which conformably engages on the innercircumference of the pipe ends so as to extend on opposite sides of theline of juncture there between, means whereby the diameter of said bandmay be increased or diminished, and a mold which conformably engagesabout the periphery of the pipe ends, said mold being designed to form acollar about the abutting ends of the pipe when plastic material isintroduced therein.

In testimony whereof I aflix my signature in presence of two witnesses.

VVINFIELD STEINER SIGLER.

\Yitnesses J. GRANDJEAN, Josii Mater.

